/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchy.h
Sets the metadata to aFNamevalue
Returns true if setting the metadata was successful
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category=URigHierarchy) bool SetNameMetadata ( [FRigElementKey](API\Plugins\ControlRig\Rigs\FRigElementKey) InItem, [FName](API\Runtime\Core\UObject\FName) InMetadataName, [FName](API\Runtime\Core\UObject\FName) InValue )